From Virginia, Washington, D.C., BWI Airport, and areas south of Baltimore:

Take the Washington Beltway (I-495) to I-95 North or the Baltimore-Washington Parkway (I-295) toward Baltimore-New York. (From BWI Airport, take Parkway route--take airport exit road to Parkway.) You then have a choice of either the Harbor Tunnel or the Fort McHenry Tunnel. Both are well marked along the road. Along I-95, either turn off on the Harbor Tunnel Thruway (I-895) or remain on I-95 to the Fort McHenry Tunnel. Along Baltimore-Washington Parkway, either turn off on the Harbor Tunnel Thruway (I-895) or proceed northward and take the entrance ramp onto I-95 north marked for the Fort McHenry Tunnel. Refer to the directions below for the route you have chosen.

From Harbor Tunnel Thruway (I-895) South of Baltimore

Go through the Harbor Tunnel ($1.00 toll). Take fourth exit 12--Lombard Street. Proceed through the traffic light onto Bayview Boulevard of the Johns Hopkins Bayview Research Campus. Take the first right, and continue until it comes to a stop sign (it winds to the left). At the stop sign, turn right into Cassell Drive. We are in the TRIAD Bldg, which is across the (metered) parking lot. We are in Suite 3000 (the 3rd floor) - right across the elevator.